Invisible Markers to Boost Plastic Recycling Quality
Sustainability is more than just conversation
It also means being responsible corporate citizens while producing quality products. A key part of this process is working internally with employees and externally with partners to create more efficient and environmentally friendly options for our customers.
Plastic Packaging Recycling using Intelligent Separation technologies for Materials (PRISM) is a new way of rapidly sorting packaging based on intelligent labels with invisible markers that can be detected and sorted using existing systems. The labels and markers are removed completely by the recycling process.
Sorting is accomplished using modifications to existing NIR sorting machinery. The new technology can boost recycling plant yields with efficient ways of sorting materials such as PP packaging used for food, HDPE milk bottles and sleeved PET containers to increase recovery of food grade plastics and open up new markets for recovered plastics.
This technology uses commercial labelling and decoration methods, which are coded with high performing luminescent compounds to potentially sort targeted streams including:
- food-contract plastics
- chemical packaging
- automotive plastics
- black plastics
- and different grades of one plastic
Packaging marked with intelligent labels or coatings can be uniquely identified and sorted with high efficiency and utilising commercial equipment that is modified with UV lighting
This technology offers the potential to sort a range of targeted recycled materials such as food grade PP, HDPE & PET packaging as well as others
Sorting speeds 2.2 to 4.4 tonnes/hr/ meter of belt width:
• Yields 90% – 98% after optimization
• Purity 95% or higher in a single pass
• Purity >99% in a 2nd pass